WBC welterweight king Floyd Mayweather Jr. announced on the social networks that he officially reunited with his father, Floyd Mayweather Sr. Big Floyd will train his son for the upcoming title defense on May 4th at the MGM Grand in Las Vegas. Floyd Sr. trained his son in the early part of his career - until the two of them had a falling out and then uncle Roger Mayweather took over. Roger has been dealing with health issues for the last few months and Floyd Sr. has stepped in as head trainer. The May 4th opponent is still unknown. Robert Guerrero is viewed by insiders as the frontrunner, despite Floyd Jr. naming IBF champion Devon Alexander as the frontrunner last week.